Given data:35% of traffic belongs to SAST group, LSF = 1.3, fcf = 4.5 MPa, NDT = 5e7 HVAGs Complete the table below and determine the total % damage contribution for fatigueand erosion from the SAST group for rigid pavement with no concrete shoulder.Single Axle Single Tyre (SAST)Axlegroupload(kN)130120110100908070proportionof loads0.000240.000230.000350.3360.3210.2710.07118Se = 0.8 MPaFatigue analysisExpectedAllowablerepetitions repetitions Damage (%)F3 = 2.1Erosion analysisAllowablerepetitionsΣ =Damage (%)

To calculate the expected repetitions for fatigue analysis (Se = 0.8 MPa), you can use the following…

Complete the table below and determine the total % damage contribution for fatigue and erosion from the SAST group for rigid pavement with no concrete shoulder. Single Axle Single Tyre (SAST) Axle group proportion load (KN) 130 120 110 100 90 80 70 of loads Expected 0.00024 0.00023 0.00035 0.336 0.321 0.271 0.07118 Se = 0.8 MPa Fatigue analysis Allowable Allowable repetitions repetitions Damage (%) repetitions F3 = 2.1 Erosion analysis = Σ = Damage (%)

Complete the table below and determine the total % damage contribution for fatigue and erosion from the SAST group for rigid pavement with no concrete shoulder. Single Axle Single Tyre (SAST) Axle group proportion load (KN) 130 120 110 100 90 80 70 of loads Expected 0.00024 0.00023 0.00035 0.336 0.321 0.271 0.07118 Se = 0.8 MPa Fatigue analysis Allowable Allowable repetitions repetitions Damage (%) repetitions F3 = 2.1 Erosion analysis = Σ = Damage (%)

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Design of pavements

Pavement is a structure that is made up of different layers such as sub-base course layer, base course layer, binder course, and a surface course formed with different materials such as gravel, above the subgrade soil constructed to act as a path or carriageway enabling the movement of vehicles. The surface of the pavement should possess characteristics such as adequate friction, light reflection, and drainage. The pavements are classified based on structural design into rigid pavements, flexible pavements, composite pavements, and unpaved pavements. The process of determining a suitable pavement type, its constituent layers, and its thickness is called pavement design.

Question

Given data: 35% of traffic belongs to SAST group, LSF = 1.3, fcf = 4.5 MPa, NDT = 5e7 HVAGs

Complete the table below and determine the total % damage contribution for fatigue
and erosion from the SAST group for rigid pavement with no concrete shoulder.
Single Axle Single Tyre (SAST)
Axle
group
load
(kN)
130
120
110
100
90
80
70
proportion
of loads
0.00024
0.00023
0.00035
0.336
0.321
0.271
0.07118
Se = 0.8 MPa
Fatigue analysis
Expected
Allowable
repetitions repetitions Damage (%)
F3 = 2.1
Erosion analysis
Allowable
repetitions
Σ =
Damage (%)

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Step 1: Calculating Expected repetitions

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Step 2: Calculating the allowable repetitions and damage (%) for fatigue analysis..

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Step 3: Calculating the allowable repetitions and damage (%) for Erosion analysis..

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